RELICS: Strong-lensing Analysis of the Massive Clusters MACS J0308.9+2645 and PLCK G171.9-40.7

Ana Acebron, Nathália Cibirka, Adi Zitrin, Dan Coe, Irene Agulli, Keren Sharon, Maruša Bradač, Brenda Louise Frye, Rachael C. Livermore, Guillaume Mahler, Brett Salmon, Keiichi Umetsu, Larry Bradley, Felipe Andrade-Santos, Roberto Avila, Daniela Carrasco, Catherine Cerny, Nicole G. Czakon, William A. Dawson, Austin T. HoagKuang Han Huang, Traci L. Johnson, Christine Jones, Shotaro Kikuchihara, Daniel Lam, Lorenzo Lovisari, Ramesh Mainali, Pascal A. Oesch, Sara Ogaz, Masami Ouchi, Matthew Past, Rachel Paterno-Mahler, Avery Peterson, Russell E. Ryan, Irene Sendra-Server, Daniel P Stark, Victoria Strait, Sune Toft, Michele Trenti, Benedetta Vulcani

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Strong gravitational lensing by galaxy clusters has become a powerful tool for probing the high-redshift universe, magnifying distant and faint background galaxies. Reliable strong-lensing (SL) models are crucial for determining the intrinsic properties of distant, magnified sources and for constructing their luminosity function. We present here the first SL analysis of MACS J0308.9+2645 and PLCK G171.9-40.7, two massive galaxy clusters imaged with the Hubble Space Telescope, in the framework of the Reionization Lensing Cluster Survey (RELICS). We use the light-traces-mass modeling technique to uncover sets of multiply imaged galaxies and constrain the mass distribution of the clusters. Our SL analysis reveals that both clusters have particularly large Einstein radii (θ E > 30″ for a source redshift of z s = 2), providing fairly large areas with high magnifications, useful for high-redshift galaxy searches (∼2 arcmin2 with μ > 5 to ∼1 arcmin2 with μ > 10, similar to a typical Hubble Frontier Fields cluster). We also find that MACS J0308.9+2645 hosts a promising, apparently bright (J ∼ 23.2-24.6 AB), multiply imaged high-redshift candidate at z ∼ 6.4. These images are among the brightest high-redshift candidates found in RELICS. Our mass models, including magnification maps, are made publicly available for the community through the Mikulski Archive for Space Telescopes.

Original languageEnglish (US)
Article number42
JournalAstrophysical Journal
Volume858
Issue number1
DOIs
StatePublished - May 1 2018

Fingerprint

galaxies
magnification
modeling
analysis
mass distribution
Hubble Space Telescope
universe
luminosity
telescopes
radii
distribution

Keywords

  • galaxies: clusters: individual (MACS J0308.9+2645, PLCK G171.9-40.7)
  • gravitational lensing: strong

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Acebron, A., Cibirka, N., Zitrin, A., Coe, D., Agulli, I., Sharon, K., ... Vulcani, B. (2018). RELICS: Strong-lensing Analysis of the Massive Clusters MACS J0308.9+2645 and PLCK G171.9-40.7. Astrophysical Journal, 858(1), [42]. https://doi.org/10.3847/1538-4357/aabe29

RELICS : Strong-lensing Analysis of the Massive Clusters MACS J0308.9+2645 and PLCK G171.9-40.7. / Acebron, Ana; Cibirka, Nathália; Zitrin, Adi; Coe, Dan; Agulli, Irene; Sharon, Keren; Bradač, Maruša; Frye, Brenda Louise; Livermore, Rachael C.; Mahler, Guillaume; Salmon, Brett; Umetsu, Keiichi; Bradley, Larry; Andrade-Santos, Felipe; Avila, Roberto; Carrasco, Daniela; Cerny, Catherine; Czakon, Nicole G.; Dawson, William A.; Hoag, Austin T.; Huang, Kuang Han; Johnson, Traci L.; Jones, Christine; Kikuchihara, Shotaro; Lam, Daniel; Lovisari, Lorenzo; Mainali, Ramesh; Oesch, Pascal A.; Ogaz, Sara; Ouchi, Masami; Past, Matthew; Paterno-Mahler, Rachel; Peterson, Avery; Ryan, Russell E.; Sendra-Server, Irene; Stark, Daniel P; Strait, Victoria; Toft, Sune; Trenti, Michele; Vulcani, Benedetta.

In: Astrophysical Journal, Vol. 858, No. 1, 42, 01.05.2018.

Research output: Contribution to journalArticle

Acebron, A, Cibirka, N, Zitrin, A, Coe, D, Agulli, I, Sharon, K, Bradač, M, Frye, BL, Livermore, RC, Mahler, G, Salmon, B, Umetsu, K, Bradley, L, Andrade-Santos, F, Avila, R, Carrasco, D, Cerny, C, Czakon, NG, Dawson, WA, Hoag, AT, Huang, KH, Johnson, TL, Jones, C, Kikuchihara, S, Lam, D, Lovisari, L, Mainali, R, Oesch, PA, Ogaz, S, Ouchi, M, Past, M, Paterno-Mahler, R, Peterson, A, Ryan, RE, Sendra-Server, I, Stark, DP, Strait, V, Toft, S, Trenti, M & Vulcani, B 2018, 'RELICS: Strong-lensing Analysis of the Massive Clusters MACS J0308.9+2645 and PLCK G171.9-40.7', Astrophysical Journal, vol. 858, no. 1, 42. https://doi.org/10.3847/1538-4357/aabe29
Acebron, Ana ; Cibirka, Nathália ; Zitrin, Adi ; Coe, Dan ; Agulli, Irene ; Sharon, Keren ; Bradač, Maruša ; Frye, Brenda Louise ; Livermore, Rachael C. ; Mahler, Guillaume ; Salmon, Brett ; Umetsu, Keiichi ; Bradley, Larry ; Andrade-Santos, Felipe ; Avila, Roberto ; Carrasco, Daniela ; Cerny, Catherine ; Czakon, Nicole G. ; Dawson, William A. ; Hoag, Austin T. ; Huang, Kuang Han ; Johnson, Traci L. ; Jones, Christine ; Kikuchihara, Shotaro ; Lam, Daniel ; Lovisari, Lorenzo ; Mainali, Ramesh ; Oesch, Pascal A. ; Ogaz, Sara ; Ouchi, Masami ; Past, Matthew ; Paterno-Mahler, Rachel ; Peterson, Avery ; Ryan, Russell E. ; Sendra-Server, Irene ; Stark, Daniel P ; Strait, Victoria ; Toft, Sune ; Trenti, Michele ; Vulcani, Benedetta. / RELICS : Strong-lensing Analysis of the Massive Clusters MACS J0308.9+2645 and PLCK G171.9-40.7. In: Astrophysical Journal. 2018 ; Vol. 858, No. 1.
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AU - Cibirka, Nathália

AU - Zitrin, Adi

AU - Coe, Dan

AU - Agulli, Irene

AU - Sharon, Keren

AU - Bradač, Maruša

AU - Frye, Brenda Louise

AU - Livermore, Rachael C.

AU - Mahler, Guillaume

AU - Salmon, Brett

AU - Umetsu, Keiichi

AU - Bradley, Larry

AU - Andrade-Santos, Felipe

AU - Avila, Roberto

AU - Carrasco, Daniela

AU - Cerny, Catherine

AU - Czakon, Nicole G.

AU - Dawson, William A.

AU - Hoag, Austin T.

AU - Huang, Kuang Han

AU - Johnson, Traci L.

AU - Jones, Christine

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AU - Lam, Daniel

AU - Lovisari, Lorenzo

AU - Mainali, Ramesh

AU - Oesch, Pascal A.

AU - Ogaz, Sara

AU - Ouchi, Masami

AU - Past, Matthew

AU - Paterno-Mahler, Rachel

AU - Peterson, Avery

AU - Ryan, Russell E.

AU - Sendra-Server, Irene

AU - Stark, Daniel P

AU - Strait, Victoria

AU - Toft, Sune

AU - Trenti, Michele

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N2 - Strong gravitational lensing by galaxy clusters has become a powerful tool for probing the high-redshift universe, magnifying distant and faint background galaxies. Reliable strong-lensing (SL) models are crucial for determining the intrinsic properties of distant, magnified sources and for constructing their luminosity function. We present here the first SL analysis of MACS J0308.9+2645 and PLCK G171.9-40.7, two massive galaxy clusters imaged with the Hubble Space Telescope, in the framework of the Reionization Lensing Cluster Survey (RELICS). We use the light-traces-mass modeling technique to uncover sets of multiply imaged galaxies and constrain the mass distribution of the clusters. Our SL analysis reveals that both clusters have particularly large Einstein radii (θ E > 30″ for a source redshift of z s = 2), providing fairly large areas with high magnifications, useful for high-redshift galaxy searches (∼2 arcmin2 with μ > 5 to ∼1 arcmin2 with μ > 10, similar to a typical Hubble Frontier Fields cluster). We also find that MACS J0308.9+2645 hosts a promising, apparently bright (J ∼ 23.2-24.6 AB), multiply imaged high-redshift candidate at z ∼ 6.4. These images are among the brightest high-redshift candidates found in RELICS. Our mass models, including magnification maps, are made publicly available for the community through the Mikulski Archive for Space Telescopes.

AB - Strong gravitational lensing by galaxy clusters has become a powerful tool for probing the high-redshift universe, magnifying distant and faint background galaxies. Reliable strong-lensing (SL) models are crucial for determining the intrinsic properties of distant, magnified sources and for constructing their luminosity function. We present here the first SL analysis of MACS J0308.9+2645 and PLCK G171.9-40.7, two massive galaxy clusters imaged with the Hubble Space Telescope, in the framework of the Reionization Lensing Cluster Survey (RELICS). We use the light-traces-mass modeling technique to uncover sets of multiply imaged galaxies and constrain the mass distribution of the clusters. Our SL analysis reveals that both clusters have particularly large Einstein radii (θ E > 30″ for a source redshift of z s = 2), providing fairly large areas with high magnifications, useful for high-redshift galaxy searches (∼2 arcmin2 with μ > 5 to ∼1 arcmin2 with μ > 10, similar to a typical Hubble Frontier Fields cluster). We also find that MACS J0308.9+2645 hosts a promising, apparently bright (J ∼ 23.2-24.6 AB), multiply imaged high-redshift candidate at z ∼ 6.4. These images are among the brightest high-redshift candidates found in RELICS. Our mass models, including magnification maps, are made publicly available for the community through the Mikulski Archive for Space Telescopes.

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